Spectra Precision HV302 - Mask Mode using the RC402 N menu; RC402 N Mask Mode Setup

Mask Mode using the RC402N menu
 Press and release the button at the Standard
Display and select >>Mask Mode<< by pressing the
down arrow button.
 Press and release the button, the
mask symbol occurs.
 For selecting the side, press and release
one of the arrow buttons.
 When all areas have been set, press
button to store the mask sector selection.
The RC402N display indicates which side of the laser
the beam has been electronically turned off.